Studies related to the structure and reactivity of coals

Redlich, Peter J.; Carr, Richard M.; Jackson, W. Roy; Larkins, Frank P.; Chaffee, Alan L.

doi:10.1016/0016-2361(90)90043-p

Cited by 17 publications

(3 citation statements)

References 71 publications

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“…Redlich et al . ,,, showed, for a wide range of Australian and international coals, that the conversion (CH 2 Cl 2 basis, CO 2 -free) for reactions in tetralin/H 2 fell on a single trend-curve when plotted against the atomic H/C ratio. A single trend-curve was also found for reactions in SnO 2 /H 2 .…”

Section: Resultsmentioning

confidence: 99%

“…All experimental procedures used in this study have been described previously. − Briefly, hydrogenation experiments were carried out using coal that had been acid-washed and dried under nitrogen at 105 °C. A coal−tetralin (3 and 9 g, respectively) mixture was heated in an autoclave (70 mL) under 6 MPa initial hydrogen pressure for 1 h at 405 °C.…”

Section: Methodsmentioning

confidence: 99%

“…Redlich et al . − have used a combination of reactions under prescribed conditions and a range of analytical techniques to correlate the atomic H/C ratio of coals with their structure and reactivity. In this study their techniques will be applied to the range of coals used in the previous work. , …”

Section: Introductionmentioning

confidence: 99%

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Structural Characterization of Some North American Coals

et al. 1998

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The structure of five U.S. coals (three of low rank or sub-bituminous and two of high rank) has been investigated using reactivity criteria and spectroscopic methods. The results suggest that one of the high-rank coals PSOC 831 contains more cross-linking groups within its macromolecular structure than the other high-rank coal DECS 12. These cross-linkages help to explain some previously reported anomalous results resulting from reactions of PSOC 831 with hydrogen in the presence of MoS 2 . The DECS 9 and PSOC 1379 were shown to be typical low-rank coals and gave significant "guest"-derived materials (terpenoid and wax-derived hydrocarbons) from pyrolyses at 320 and 350 °C, and the sub-bituminous coal DECS 6 showed many structural similarities when compared with a range of other sub-bituminous coals from Central Queensland, Australia.

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